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Programming MapReduce with Scalding

You're reading from   Programming MapReduce with Scalding A practical guide to designing, testing, and implementing complex MapReduce applications in Scala

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Product type Paperback
Published in Jun 2014
Publisher
ISBN-13 9781783287017
Length 148 pages
Edition 1st Edition
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Author (1):
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Antonios Chalkiopoulos Antonios Chalkiopoulos
Author Profile Icon Antonios Chalkiopoulos
Antonios Chalkiopoulos
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Table of Contents (11) Chapters Close

Preface 1. Introduction to MapReduce 2. Get Ready for Scalding FREE CHAPTER 3. Scalding by Example 4. Intermediate Examples 5. Scalding Design Patterns 6. Testing and TDD 7. Running Scalding in Production 8. Using External Data Stores 9. Matrix Calculations and Machine Learning Index

Introduction to testing

The definition of testing in software development is:

"Software testing can be stated as the process of validating and verifying that a computer program/application/product meets the requirements that guided its design and development, works as expected, can be implemented with the same characteristics, and satisfies the needs of stakeholders" (http://en.wikipedia.org/wiki/Software_testing).

Properly testing an application means that we will have to focus on every layer of the application being developed:

  • Unit/component testing: This verifies that a specific part or component of the application works as designed.
  • Integration testing: This verifies that the different components interact as expected. Also, this validates that interfaces between components are consistent to the expectations of other components.
  • Acceptance testing: This validates the final application behavior against stakeholder requirements.
  • System testing: This validates the application completely...
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